EP2588767B1 - Tilting-segment bearing - Google Patents

Description

The invention relates to a Kippsegmentlager for supporting a shaft having a longitudinal axis, the at least two circumferentially spaced Kippsegmente, each having a bearing surface, and at least one Warmölausleiter, which is arranged in a space between the at least two tilting segments, at least one in axial direction extending first dam, arranged in a circumferential direction of the shaft behind the first dam oil injection device and a first oil discharge, wherein the oil injection device is adapted to inject oil onto the shaft so that adhering to the shaft oil is replaced and a mixture formed from the detached oil and the injected oil, and by the first Ölaustrag at least a portion of the mixture is discharged.

Such bearings are known from the prior art, for example from the US Pat. No. 5,879,085 B1 known for a long time. They comprise at least two circumferentially spaced apart tilting segments, each having a bearing surface. These tilting segments are usually lubricated individually with an oil. This oil forms a lubricating film which is located in the lubricating gap between the bearing surface of each of the tilting segments and the shaft to be supported. Due to the rotation of the shaft, the oil is conveyed through this lubrication gap. It is heated so that it leaves the lubrication gap warmer when it has entered it.

A tilting pad bearing with the various tilting segments is provided for a certain direction of rotation of the shaft. Each of the tilting segments has a front and a rear or a leading and a trailing edge. In this case, the leading or leading edge is the edge that is first swept over by a point on the rotating shaft, while the trailing edge of the tilting segment is the edge that will eventually overflow from the point on the shaft. In the following, if "in a direction of rotation of the shaft forward" and "in a direction of rotation of the shaft behind" the speech, this is to be understood in this sense. Consequently, a point on the rotating shaft first passes by a point on the tilting segment which is "in the direction of rotation of the forward shaft" before it passes by a point of the tilting segment which is "in one Direction of rotation of the shaft at the rear ".

In order to further develop plain bearings and to increase their performance, the maximum weight of the shaft to be supported or the maximum achievable speeds should be increased, for example, while maintaining the same design and size of the bearing. This increase in performance is achieved, for example, by supplying more cool oil or by introducing cooler oil specifically to the most heavily loaded and therefore hottest points of the plain bearing. alternative or in addition, hot oil that has passed, for example, through the lubricating gap between one of the tilting segments and the shaft, can be prevented from entering the next lubricating gap between the adjoining tilting segment and the shaft.

This is for example from the US 4,497,587 known to arrange the supply of lubricating oil in a arranged between two adjacent tilting segments separate component. This has in the direction of rotation of the shaft in front of a dam by the oil located on the shaft is to be prevented from entering the next lubrication gap of the subsequent tilting segment. The distance between the radially inner surface of the dam and the shaft should preferably be slightly larger than the distance between the bearing surface of the tilting segments and the shaft. This means that only emerging from the lubrication gap of the respective preceding Kippsegmentes oil that is accelerated by the high rotational speed of the shaft and the resulting centrifugal force to the outside, can be intercepted by this dam. In the direction of rotation of the shaft behind this dam is located in the separate component a trough, which is filled from the outside with fresh oil. Due to the rotation of the shaft, exactly this amount of oil is drawn into the lubricating gap between the adjoining tilting segment and the shaft, which is necessary for adequate lubrication. The disadvantage, however, is that an adhering to the shaft oil film, which consists of warm oil that has already been heated in the lubrication gap between the previous tilting segment and the shaft, can not be detached from the shaft and can not be prevented by the proposed dam to penetrate into the lubrication gap between the following tilting segment and the shaft. With the embodiment of the component between the individual tilting segments described there, only a part of the oil that dissolves from the shaft anyway can be intercepted. The oil film not caught by this dam and located on the shaft practically completely enters the next lubrication gap and is further heated here.

A similar embodiment is from the US 5,738,447 known. Here, too, a separate component is arranged between two adjacent tilting segments has a dam and an arranged in the direction of rotation of the shaft behind the oil supply device. Again, a portion of the oil is blocked by the dam, which emerges from the lubrication gap between the previous segment and the shaft. Again, however, there is a certain distance between the radially inner surface of the dam and the shaft to be supported. Also in this embodiment, therefore, an oil film adhering to the shaft can not be prevented from entering the lubricating gap between the following tilting segment and the shaft. The oil supply device is designed in the mentioned embodiment so that the oil is sprayed directly onto the lubrication gap to be filled between the following tilting segment and the shaft. This is to ensure that as much of the cool oil can penetrate into the lubrication gap.

From the US 5,288,153 is a Kippsegmentlager known in which an additional separate component is also disposed between two adjacently arranged Kippsegmenten. However, this does not have a dam for intercepting a part of the shaft adhering oil. Instead, located on this component a plurality of oil injection nozzles, is sprayed by the fresh oil under high pressure on the shaft to be stored. This is intended to replace a film of oil adhering to the shaft. This mixes with the fresh oil, so that the average temperature of the oil mixture is lowered. This oil mixture then enters the lubrication gap between the following tilting segment and the shaft, so that even in this case the film of hot oil adhering to the shaft completely enters the subsequent lubrication gap from the lubrication gap between the preceding tilting segment and the shaft.

From the US 4,291,926 is also a Kippsegmentlager known in which also between two adjacently arranged Kippsegmenten an oil supply device is arranged as a separate component.

The same applies to the US 7,758,247 B2 , Again, Ölzuführbalken between each two adjacent arranged tilting segments are provided. On the one hand, they fulfill the task of introducing fresh oil into the bearing and, on the other hand, preventing circumferential movement of the individual tilting segments.

Also from the US 4,300,808 Such an arrangement is known. Here, the supplied fresh oil is also used to cool the Kippsegmente. After cooling, the oil is removed in radially spaced from the shaft channels.

Also the JP 581 80 815 as well as the US 4,247,157 A each disclose a Kippsegmentlager, in which between two spaced-apart Kippsegmenten a hot oil discharger is arranged.

The invention is therefore based on the object to further develop a generic Kippsegmentlager and to increase the performance.

The invention solves this problem by a Kippsegmentlager for supporting a shaft with a longitudinal axis according to the preamble of claim 1, characterized in that in the direction of rotation of the shaft behind the first Ölaustrag a second dam and behind a Öleinbringvorrichtung is arranged, the second Dam and oil inlet device are parts of the hot oil extractor.

The inventive design of a Kippsegmentlagers a Heißölüberschleppung, is disturbed in the hot oil from a lubrication gap between a tilting segment and the bearing in the next lubrication gap of the subsequent tilting segment, impaired or even completely prevented. This is done by the at least one hot oil discharger, which is arranged between two adjacent tilting segments. He replaces known oil injections, which can be arranged in spaces between tilting segments. In addition, the space between the two adjacent tilting segments is filled by the hot oil discharge, so that it can not come here to a large oil reservoir into which additional friction effects can occur due to turbulence. This prevents unnecessary heating of the oil and increases the efficiency of the bearing. A hot oil spout is firmly arranged and obstructed in a housing ring on which the tilting pads are attached the Kippbeweglichkeit the individual Kippsegmente not.

The hot oil spout of a tilting pad bearing according to the invention has a first dam which extends in the axial direction along the longitudinal axis of the shaft. It preferably extends over the entire axial length of the tilting pad bearing. It must of course be taken to ensure that he does not come into contact with the shaft. For this purpose, the first dam to the shaft must have a game that corresponds at least to the maximum shaft displacement. Advantageous distances between the inner surfaces of the first dam and the shaft are thus at least in the order of magnitude of the maximum shaft displacement, that is, for example, less than 0.2 mm, preferably less than 0.15 mm, more preferably less than 0.1 mm. In this way, it is ensured that a large part of the oil on the shaft, which has been heated in the lubricating gap between the preceding tilting segment and the shaft, is prevented from being carried over into the next lubricating gap.

Behind the first dam is an oil injection device, through which fresh and cool oil is sprayed onto the shaft. Typical injection temperatures of the oil are 40-50 ° C. In some cases, injection temperatures of 55 - 60 ° C may occur. The lower the injection temperature, the more effectively the injected oil will cool the bearing and shaft and increase the efficiency of the tilt pad bearing. By injecting the cooled oil in the described form of the last remaining on the shaft remaining of the oil from the previous lubrication gap drawn oil is broken and detached from the shaft. It then forms a mixture with the supplied oil. Since a large part of the warm oil located on the shaft has already been caught by the first dam arranged further up front, the warm oil detached from the shaft contributes only very little to the mixture. The temperature of the mixture is therefore determined essentially by the temperature of the fresh, cool oil injected.

However, the hot oil spout also has a first oil discharge, through which a part of this mixture of the detached from the shaft warm oil and the injected cool oil can be discharged again. This has several advantages. On the one hand, this ensures that a further portion of the oil, which originates from the lubricating gap of the preceding tilting segment, is effectively prevented from penetrating into the following lubricating gap. In addition, the oil discharge has the consequence that more fresh oil can be injected through the oil injection device than would be necessary for lubricating the next lubrication gap. The excess oil content can be discharged through the oil discharge. This means that the ratio between the injected cool oil and the removed from the shaft warm oil is further shifted in favor of the fresh oil. Thus, the average temperature of the mixture continues to decrease, so that by the oil discharge even more effective cooling of the tilting pad bearing is achieved.

The inventive design of the Kippsegmentlagers and contained therein Warmölausleiters is thus ensured that at most a very small part of the exiting from the previous lubrication gap warm oil can enter the next lubrication gap. This is ensured by the combination of the different parts of the hot oil extractor. Only in combination do they unfold their full effect. The discharged through the oil discharge part of the mixture of the oil is collected, cooled and fed back to the oil injection device.

In a preferred embodiment, located in the direction of rotation of the shaft in front of the first dam, a second oil discharge. Through this, warm oil, which was intercepted by the first dam, be discharged. This discharged oil is collected, cooled and fed back, for example, an oil injection device. In this case, the second oil discharge be part of the Warmölausleiters or be designed as a separate component or as part of the Kippsegmente. By a hot oil spout of the described embodiment can thus be blocked for a warm, originating from the previous lubricating gap oil and led out of the camp, while also hijacked oil, which is passed as a thin film on the shaft adhering to the first dam, hosed, blocked and be led out of the warehouse.

This ensures effective cooling of the bearing and in particular of the tilting segments. In addition, by the fact that the space between two adjacent tilting segments is almost completely filled by the hot oil spouts, swirl losses are minimized in the camp.

Within the Warmölausleiters a chamber may be provided, which is supplied by oil supply means in the warehouse with cooled oil. This chamber ensures supply of the oil injection device with cool oil.

According to the invention, in the direction of rotation of the shaft behind the first oil discharge, a second dam and behind an oil inlet device are arranged, wherein the second dam and the oil inlet device are parts of the Warmölausleiters. By this second dam can be ensured that the mixture of the injected fresh oil and the detached from the shaft heated oil is almost completely discharged and not used for lubrication of the next tilting segment or the next lubrication gap. Thus, a hot oil transfer from a lubrication gap in the following lubrication gap can be completely prevented. The oil necessary for lubrication of the next lubrication gap is provided by the additional oil introduction device. Since no oil layer on the shaft must be sprayed off by this introduced oil, the oil can be introduced here with significantly lower pressure. This allows a more homogeneous distribution and a more laminar flow of the oil can be achieved in the lubrication gap, which also prevents losses due to friction and turbulent flows of the oil in the lubrication gap or at least reduced.

According to the invention, the second dam and the oil inlet device may be parts of the hot oil extractor. Not according to the invention, it is possible to provide the oil introduction device, as known from the prior art, in the region of the leading edge, ie the leading edge, of the respective tilting segment. In this case, it is possible to form the leading edge of the respective tilting segment as a second dam. In this case, the leading edge of the following on the Warmölausleiter tilting segment could, for example, be sharp-edged, so that a blocking of the mixture of oil detached from the shaft and freshly injected oil is ensured. In this case, the leading edge is to be designed so that this mixture on the oil discharge passes. One possible embodiment of the leading edge of the respective tilting segment is a chamfer of the segment inflow side, which has an angle of more than 90 ° to the bearing surface. This is where the principle of a non-contact seal comes into play. Another possible embodiment of the leading edge of a tilting segment is the shape similar to a turning tool. Such a chisel edge on the segment inflow edge has an angle of less than 90 ° to the bearing surface and is rounded downwards, so that the blocked mixture of different oils can be directed to the oil discharge.

Of course, it is also possible to choose the mentioned embodiments, if the second dam, according to the invention, is part of the hot oil extractor.

Not according to the invention it is also possible to provide only the second dam on the hot oil spreader and to provide the oil inlet device to be arranged behind it as part of the respective tilting segment. It is only important that the oil inlet device is arranged in the direction of rotation of the shaft behind the second dam, so that the second dam ensures that the mixture of oil detached from the shaft and freshly injected oil that has been sprayed onto the shaft by the oil injection device, is blocked. Thus, a transfer of heated oil from a lubrication gap in the following lubrication gap is reliably avoided.

The oil injection device preferably has a plurality of nozzles spaced apart in the axial direction. Through this, the oil is preferably injected perpendicular to the shaft. As a result, the momentum transfer to the oil film located on the shaft is greatest, so that it can be safely broken up and detached. Alternatively, the oil injection device comprises one or more slots extending in the axial direction. In this way, the most homogeneous possible injection of the oil is ensured by the oil injection device.

Preferably, the first dam and / or the second dam are configured bent such that an axially middle portion of the respective dam in the direction of rotation of the shaft is located further forward than in the axial direction outer portions of the respective dam. This ensures that oil, which is detached from the shaft in an axially middle portion of the bearing, safely and particularly easily and effectively directed radially outward, where it can leave the camp. It has proved to be advantageous if the first dam and / or the second dam comprises a plurality of circumferentially spaced lamellae. In this way, the respective dam comprises not only a leading edge, but a plurality of spaced from each other. Each lamella of the respective dam has its own leading edge and thus has a similar effect as a separate dam. In this way, the proportion of oil passed by the dam can be further reduced.

Preferably, the first dam and / or the second dam comprises a discharge surface which is shaped in such a way that oil located in the direction of rotation of the shaft in front of the respective dam can be conducted out of the storage in the axial direction. Again, a preferred embodiment is designed such that the discharge surface is formed bent so that the middle portion in the axial direction is further forward, as edge portions. This ensures that the oil or oil mixture blocked off at the front of the dam is discharged.

A tilting pad bearing advantageously comprises a plurality of segments distributed over a circumference of the bearing. The segments may be identical or different. In particular, it may be useful in a lower region of the bearing on which rests the shaft to be stored, to provide wider, so in the circumferential direction longer segments to better withstand the stress occurring here. Advantageously, there is a hot oil spout in each intermediate space which is formed by two adjacent tilting segments. These can all be constructed identical or differently. Thus, it may be particularly useful if, for example, the individual tilting segments are of different lengths in the circumferential direction, provide behind such a long tilting segment a Warmölausleiter, which ensures that no oil from the lubrication gap of the long tilting segment with the shaft are passed into the next lubrication gap as possible can. This is in the circumferential direction shorter tilting segments may not be necessary, since the temperatures occurring here are lower than in circumferentially long segments.

If, for lubricating a lubrication gap, the already described additional oil inlet device, which is arranged behind the second dam, is provided, this has the advantage that the oil can be introduced through this oil inlet device not only with lower pressure but also at a more acute angle to the shaft surface. Since it is not necessary to break up and detach an oil layer or an oil film still located on the shaft, the angle of incidence can be chosen to be relatively low here. This also ensures a laminar flow and a homogeneous application of the oil on the shaft and in particular in the lubrication gap of the following tilting segment.

In principle, the tilting pad bearings described above are suitable for supporting shafts with very different diameters. For example, shaft diameters of 20-1000 mm are common, and waves with a diameter of 60-200 mm are used especially for high rotational speeds. Of course, however, other shaft diameters can be used if such a shaft has to be stored.

Figur 1 -

eine Schnittdarstellung eines nicht erfindungsgemäßen Kippsegmentlagers;

Figur 2 -

einen vergrößerten Ausschnitt aus Figur 1;

Figur 3 -

eine schematische 3D-Ansicht eines Warmölausleiters,

Figur 4 -

eine schematische Schnittdarstellung durch den Warmölausleiter aus Figur 3,

Figur 5 -

eine schematische 3D-Ansicht eines nicht erfindungsgemäßen Warmölausleiters,

Figur 6 -

eine Schnittdarstellung durch ein Kippsegmentlager gemäß einem Ausführungsbeispiel der vorliegenden Erfindung,

Figur 7 -

einen vergrößerten Ausschnitt aus Figur 6,

Figur 8 -

eine schematische 3D-Ansicht eines weiteren Warmölausleiters und

Figur 9 -

eine schematische Schnittdarstellung durch den Warmölausleiter aus Figur 8.

With the aid of a drawing, an embodiment of the present invention will be explained in more detail below. It shows:

FIG. 1 -

a sectional view of a non-inventive tilting pad bearing;

FIG. 2 -

an enlarged section FIG. 1 ;

FIG. 3 -

a schematic 3D view of a hot oil extractor,

FIG. 4 -

a schematic sectional view through the hot oil spout FIG. 3 .

FIG. 5 -

3 is a schematic 3D view of a non-inventive hot oil discharger,

FIG. 6 -

a sectional view through a tilting pad bearing according to an embodiment of the present invention,

FIG. 7 -

an enlarged section FIG. 6 .

FIG. 8 -

a schematic 3D view of another Warmölausleiters and

FIG. 9

a schematic sectional view through the hot oil spout FIG. 8 ,

FIG. 1 shows a schematic sectional view of a tilting pad bearing 1 not according to the present invention. In the exemplary embodiment shown, the tilting pad bearing 1 has five tilting segments 2, which are arranged on a bearing ring 4. In this case, outer surfaces 6 of the individual tilting segments 2 have a smaller radius than the bearing ring 4, as a result of which the individual tilting segments 2 can be tilted about a bearing point 8.

Between each two tilting segments 2, a hot oil spout 10 is arranged, which, however, does not affect the tiltability of the tilting segments 2. In FIG. 1 If no shaft to be supported is shown, however, the tilting pad bearing 1 shown is designed only for a specific direction of rotation of a shaft to be supported, which is indicated by a directional arrow 12.

FIG. 2 shows an enlarged section FIG. 1 , Between two tilting segments 2, a Warmölausleiter 10 is arranged. The direction of rotation of a shaft to be supported is again represented by the directional arrow 12, which therefore points from "in the direction of movement of the shaft forward" to "in the direction of movement of the shaft behind".

The shown Warmölausleiter 10 has at its radially inwardly facing surface via a first dam 14. This ensures that located on the rotating shaft not shown oil, which is supported by the high rotational speeds radially outward from the first dam 14th is blocked.

In the direction of rotation of the shaft in front of the first dam 14, in FIG. 2 So left of the first dam 14, there is a second oil discharge 18. Through this oil, which is blocked by the first dam 14, discharged from the camp.

Behind the first dam 14, the hot oil spout 10 has a first oil discharge 20 and an oil injection device 22, not shown, through the oil injection direction 22 fresh, cool oil is injected onto the shaft. As a result, an oil film located on the shaft is broken up and detached, mixes with the injected oil and is discharged from the bearing via the first oil discharge 20.

At a leading edge 24 of a tilting segment 2 is a second dam 26, by which the mixture of fresh oil and the ejected from the shaft oil film is prevented from entering into the following lubrication gap. The oil injected by the oil injector 22 mixes with the oil film peeled off the shaft. To prevent this mixture in the lubrication gap between the following tilting segment 2 and the shaft passes, the second dam 26 is provided. Due to the special design of the leading edge 24, the oil mixture is passed into the first oil discharge 20 and removed from it from the camp.

In the direction of rotation behind the second dam 26 is an oil introduction device 28, not shown, which introduces fresh, cool oil directly into the lubrication gap between the tilting segment 2 and the shaft.

FIG. 3 a schematic 3D view of a Warmölausleiters 10, as shown in the Figures 1 and 2 has been used. By the directional arrow 12, the direction of rotation of a shaft is again shown, which is stored in a tilting pad 1, in which the hot oil spout 10 is used. So he points from in the direction of rotation of the shaft forward to the direction of rotation of the shaft behind.

From front to rear, the hot oil spout 10 comprises a second oil discharge 18, a first dam 14, an oil injection device 22 and a first oil discharge 20. The two oil discharges 18, 20 are designed as grooves or depressions, through which an oil or an oil mixture can be discharged from the warehouse. The second oil discharge 18 is provided to discharge the oil which is blocked by the first dam 14. Directly behind the first dam 14 is the oil injection device 22, which is in the in FIG. 3 shown. Embodiment has a plurality of spaced apart from each other in the axial direction of nozzles 28. These extend over the entire axial extent of the Warmölausleiters 10 and thus ensure that over the entire axial extent of the Kippsegmentlagers 1 an adhering to the shaft oil film is detached.

The oil injected by the oil injector 22 or its nozzles 28 mixes with the oil film detached from the shaft. As in FIG. 2 can be seen, the tilting segment 2 has at its leading edge over a second dam 26, which prevents this oil mixture can penetrate into a lubrication gap between the tilting segment 2 and the shaft. Instead, the oil mixture is passed to the first oil discharge 20, which has a discharge surface 30 in addition to a discharge edge 32. However, the Ableitkante 32 has no blocking function, but is such designed so that blocked by a leading edge 24 oil or oil mixture can flow along the discharge surface 30 and leave the camp.

FIG. 4 shows a section through the Warmölausleiter 10 FIG. 3 , In addition to the already described surface design with the first dam 14, the second oil discharge 18, the first oil discharge 20 and the oil injection device 22 is in FIG. 4 a chamber 34 which is connected to a nozzle 28 of the oil injection device 22. Through this chamber 34, the oil injection device 22 and the nozzles 28 is supplied with fresh, cooled oil. The chamber 34 is connected via leads 36 to an oil supply, is provided by the fresh oil.

FIG. 5 shows a schematic 3D view with a slightly different configuration of a Heißölausleiters 10. The difference between the in FIG. 3 and in FIG. 5 shown hot oil spout 10 is in the form of the first dam 14. In FIG. 5 the first dam 14 is configured in the form of three successive, circumferentially spaced lamellae 38. Each of these lamellae 38 has a leading edge, so that an even larger proportion of the hot oil adhering to the shaft can be blocked off and supplied to the second oil discharge 18 by a first dam 14 configured in this way.

FIG. 6 shows a schematic sectional view of a tilting pad bearing 1 according to an embodiment of the present invention. This tilting pad bearing 1 also has five tilting segments 2, which are mounted on a bearing ring 4 via a bearing point 8. They can also be tilted around this bearing point. Between each two adjacent tilting segments 2, a Warmölausleiter 10 is arranged, which, however, in comparison to in FIG. 1 shown example has a slightly different shape.

A direction of rotation of a shaft to be supported is again indicated by a directional arrow 12.

FIG. 7 shows an enlarged section FIG. 6 , The not shown shaft facing surface of the Ölsausleiters 10 has, as in the previously shown For example, a first dam 14, a second oil discharge 18 arranged in front of it and a first oil discharge 20 arranged behind it, in the region of which the oil injection device 22 (not shown) is located. Unlike the example shown above, however, here the second dam 26 is formed as part of the Warmölausleiters 10. This second dam 26 prevents the mixture of fresh oil injected by the oil injector 22 and the oil film detached from the shaft from moving into a lubrication gap between a bearing surface 16 of the following tilting pad 2 and the shaft, not shown. On the rear, chamfered surface of the second dam 26, there is an oil introducing device which is in FIG. 7 however not shown.

FIG. 8 shows a schematic 3D view of a Warmölausleiters 10, as shown in Figures 7 and 6. From the front to the rear, the surface of such a hot oil spout 10 initially has a second oil spout 18 and a first dam 14, with which a large part of the heated oil located on the shaft can be blocked and discharged from the bearing. Behind this is the oil injection device 22 and the first oil discharge 20. With the oil injection device 22 an oil film remaining on the shaft of the heated oil is sprayed off and discharged together with the fresh oil via the first oil discharge 20. The first oil discharge 20 is limited in the embodiment shown by a second dam 26, which prevents the mixture of the injected by the oil injection device 22 fresh oil with the ejected from the shaft oil film from entering a lubrication gap of a following tilting segment 2.

In FIG. 8 In addition, nozzles 40 are shown which are part of the oil introduction device. Through the nozzles 40 of Öleinbringvorrichtung cool, fresh oil is introduced. Due to the slight inclination of the nozzles 40, this oil strikes the shaft at a low angle of incidence than the oil injected through the nozzles 28 of the oil injector 22. This results in less turbulence and turbulence, so that in general a laminar flow is achieved. In addition, this inclination makes it possible to introduce oil introduced directly via the oil inlet device or its nozzles 40 onto the lubricating gap, so that a homogeneous and laminar flow is achieved here as well. In addition, it is possible through the Nozzle 40 to introduce the oil at a lower pressure, which also minimizes the risk of turbulence and the resulting friction losses.

In one embodiment of a Heißölaüsleiters 10 according to the FIGS. 7 and 8th it is no longer necessary to provide a bearing surface 16 of the tilting segments 2 with a specially shaped leading edge 24 or provided in this bearing surface 16 Öleinbringvorrichtung. This is for example in FIG. 7 clearly visible.

FIG. 9 shows a cross section through the in FIG. 8 It can be seen both the nozzles 28 of the oil injection device 22 and the inclined nozzle 40 of the oil introduction device. The nozzles 28, 40 are supplied by the same chamber 34 with oil, which is connected to an oil supply system.

LIST OF REFERENCE NUMBERS

1 -

tilting pad

2

tilt segment

4 -

bearing ring

6 -

outer surface

8th -

bearing point

10 -

Warmölausleiter

12 -

arrow

14 -

first dam

16 -

storage area

18 -

second oil discharge

20 -

first oil discharge

22 -

Oil injector

24 -

leading edge

26 -

second dam

28 -

jet

30 -

deflection surface

32 -

deflection edge

34 -

chamber

36 -

supply

38 -

lamella

40 -

jet

Claims (8)

1. Tilting-pad bearing (1) for mounting a shaft with a longitudinal axis, said tilting-pad bearing having at least two tilting pads (2), which are spaced from one another in the peripheral direction
   and each have a bearing face (16),
   and at least one warm oil diverter (10), which is arranged in a gap between the at least two tilting pads (2),
   at least one first dam (14) extending in the axial direction,
   an oil injection device (22) arranged after the first dam (14) in a direction of revolution of the shaft, and
   a first oil discharge (20),
   wherein
   the oil injection device (22) is adapted to spray oil onto the shaft in such a way that oil adhering to the shaft is detached and a mixture of the detached oil and the injected oil forms,
   and at least some of the mixture can be discharged by means of the first oil discharge (20), characterized in that a second dam (26) is arranged after the first oil discharge (20) in the direction of revolution of the shaft, followed by an oil introduction device wherein the second dam (26) and the oil introduction device are parts of the warm oil diverter (10).
2. Tilting-pad bearing (1) according to Claim 1, characterized in that a second oil discharge (18) is arranged before the first dam (14) in the direction of revolution of the shaft.
3. Tilting-pad bearing (1) according to Claim 1 or 2, characterized in that the oil injection device (22) has a plurality of nozzles (28) spaced from one another in the axial direction.
4. Tilting-pad bearing (1) according to one of the preceding claims, characterized in that the first dam (14) and/or the second dam (26) is/are curved in such a way that a central portion in the axial direction of the respective dam (14, 26) is located further forward in the direction of revolution of the shaft than outer portions in the axial direction of the respective dam (14, 26).
5. Tilting-pad bearing (1) according to one of the preceding claims, characterized in that the first dam (14) and/or the second dam (26) comprises a plurality of lamellae (38) spaced from one another in the peripheral direction.
6. Tilting-pad bearing (1) according to one of the preceding claims, characterized in that the first dam (14) and/or the second dam (26) comprises a conducting face, which is shaped in such a way that oil located in front of the respective dam (14, 26) in the direction of rotation of the shaft can be guided from the tilting-pad bearing (1) in the axial direction.
7. Tilting-pad bearing (1) according to one of the preceding claims, characterized in that a plurality of tilting pads (2) are provided and a warm oil diverter (10) is located in each gap between each two adjacent tilting pads (2).
8. Tilting-pad bearing (1) according to Claim 7, characterized in that the warm oil diverters (10) in the gaps are of identical design.

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